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Circumference of a circle = 2*pi*radius or diameter*pi

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Q: What is the circumference of a 4cm circle?
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Related questions

What is the circumference of a circle with a radius of 4cm?

The circumference of a circle with a radius of 4cm is: 25.13 cm (r x 2 x pi)


What is the circumference of a circle if the diameter is 4cm?

Circumference = Pi X Diameter = 3.1415 X 4cm = 12.566cm


What is the circumference of a circle when the diameter equals 4cm?

A circumference of 12.57 cm


What is the ratio of the circumference of circle A that is 4cm to the circumference of circle B that is 6cm?

It is: 2 to 3 respectively


What is the circumference for d equals 4cm?

circumference of the circle = 4*pi cm


What is the circumference of a circle 4cm in width?

C = 12.6 cm


What is the circumfrence of a circle if the diameter is 4Cm?

The formula for the circumference of a circle is C = πd, π = 3.142, d = 4cm C = 3.142 x 4cm C = 12.568cm


What is the circumference of a circle if the diametre is 4cm?

4 times pi. That is about 12.57.


Find the ratio of the circumference of 4Cm?

The ratio of the circumference of a circle with radius 4 cm to its area is 1:2.


What is the circumference of a circle with a diameter of 4cm?

About 12.56 cm Btw the formula is diameter x pi (3.14)


How many points are 4cm from a given line and 4 cm from a point on that line?

There are an infinity of points 4cm from a given line. These points form 2 lines parallel to and either side of the original line. Equally, there are an infinite number of points 4cm from a given point on the original line. These points lie on the circumference of a circle radius 4cm with its centre at the given point. There are only 2 points that fulfil both conditions. These points are found on the circumference of the circle where a diameter perpendicular to the original line and passing through the given point meets the circumference of the circle. These two points are also where the two parallel lines form tangents with the circle.


If the radius is 4cm what is he circumference?

Circumference of a circle is C=2pir C=2pi(4) C=8pi C=25.12 cm Where pi is the ratio of the circumference to the diameter of any circle, approximately 3.14. There is usually a button for pi on scientific/graphing calculators.